Respectable

you shouldn't be having issues like that, what monitor do you have? your system should be able to run that seems like you settings are all jacked up. check your resolution screen scale and make sure it's not set to like 200%

Reputable

Your GPU clock speeds seem rather consistent however... it's the video memory speed that was fluctuating.
Monitor your CPU performance and also what is your HDD up to during all of this behaviour. Might shed some light.
Is this at 1080p?

Prominent

you shouldn't be having issues like that, what monitor do you have? your system should be able to run that seems like you settings are all jacked up. check your resolution screen scale and make sure it's not set to like 200%

my monitor is : aoc g2460pf with freesync
and how do i check what my resolution screen scale?

BurgerandChips66 :

Your GPU clock speeds seem rather consistent however... it's the video memory speed that was fluctuating.
Monitor your CPU performance and also what is your HDD up to during all of this behaviour. Might shed some light.
Is this at 1080p?

my CPU is very stable without any drops at 45% Utilization
And i have the game installed on sandisk ssd with 0% load.

Respectable

Yes you can but don't. overclocking VRAM will increase latency in your case, leave it as it is.

And it wont help you because the VRAM is actually down clocking as if it detects no GPU workload.
Usually when you start a GPU intensive program the memory clock is set to max and GPU clock becomes dynamic according to load.

I think this should be either fixed by the game devs or the driver devs.

I think it's fine as long as you dong see this in other games. If you do, then the VRAMs might be heating up.

Prominent

Yes you can but don't. overclocking VRAM will increase latency in your case, leave it as it is.

And it wont help you because the VRAM is actually down clocking as if it detects no GPU workload.
Usually when you start a GPU intensive program the memory clock is set to max and GPU clock becomes dynamic according to load.

I think this should be either fixed by the game devs or the driver devs.

I think it's fine as long as you dong see this in other games. If you do, then the VRAMs might be heating up.

One last try:
Reduce the VRAM speeds to 1750 and try it out.

that didnt help still memory drops - picture
here is the monitor in the game battlefield 1 - picture